Remove every old-style class.

src/memory/memory.py

@@ -37,7 +37,7 @@ SAVEFILE_PARAM_XML="/param" #xml parameters template
 SAVEFILE_DATABASE="/sat.db"
 
 
-class Params():
+class Params(object):
     """This class manage parameters with xml"""
     ### TODO: add desciption in params
 
@@ -528,7 +528,7 @@ class Params():
             self.host.bridge.paramUpdate(name, value, category, profile)
             self.storage.setIndParam(category, name, value, profile)
 
-class Memory:
+class Memory(object):
     """This class manage all persistent informations"""
 
     def __init__(self, host):